How do you make a colloid?

Colloid Mixture Basics

You create mixtures when you combine two or more substances. These substances include particles and dispersion mediums, usually in different states of matter. When the particles and mediums are insoluble but do not separate from each other, you have created a colloid mixture.

Is a colloid formed when?

Sol is a colloidal suspension with solid particles in a liquid. Emulsion is between two liquids. Foam is formed when many gas particles are trapped in a liquid or solid. Aerosol contains small particles of liquid or solid dispersed in a gas.